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Installation Guide

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Table Of Contents
ECN 7000 Series Hardware Guide 7
Figure 4 shows the relationships between the main processor and the backplane.
Some of the functionality is provided by system cards, and the rest is provided by
expansion cards.
Figure 4. ECN Main Board Architecture
Power Management
The ECN main board includes the power supply for the ECN unit, as well as for
the system cards and expansion cards. To maintain data integrity, the ECN
includes several watchdog and reset functions.
Main Power Supply
The ECN power supply is capable of operating on any phase of a 3-wire 120/240
V
AC
or 120/208 V
AC
network, making it compatible with network and non-network
transformers. The power can provide up to 30 W of continuous power, which is
ideal for RF applications where low radiated emissions are critical.
The main component of the power supply is located at the top of the ECN main
board, where the Faraday cage can provide adequate ventilation to prevent
excessive heating of the expansion cards.
Power-Up Function
On power-up, the ECN unit is held in reset by hardware watchdog circuitry until
the power supply stabilizes at its operating threshold. This function provides a